The team from the institute spent two days on site, mainly conducting internal discussions on the functions of various parts and "why they are made like this."
Things had to be transferred to heavy industry in batches in secrecy, leaving little time for the institute, but everyone still managed to conduct some surveying and mapping, especially the engine of the armored personnel carrier.
The power of this engine is 220 kilowatts. From a numerical point of view, the trucks produced by the Locomotive and Locomotive Factory also have 80 kilowatts. It seems not much lower, but it is not the same thing and there is no comparison.
Due to the rapid changes in combustion state caused by the small-capacity coal bunker of a steam vehicle, the output is not very stable. Even if the pressure is full, it will fluctuate between 60 and 80 kilowatts. During this period, the power supply may need to be reduced to restore the cylinder pressure.
The armored personnel carrier is equipped with an in-line six-cylinder diesel engine. Although the people at the institute have not really been exposed to internal combustion engines, they recently took a class on "Mechanical Power Development" and they have an idea. Even if they don't have any idea, they can guess it when they see the cylinder and bearing structure. The smoothness of the output is much higher, there is not enough consistency of movement, and six cylinders are equal to six bombs.
Surveying and mapping is a very good learning process. Everyone found that this machine, which is much smaller than an 80-horsepower steam engine, has very high processing accuracy. For example, the circular hole error of the six cylinders measured by the vernier caliper is less than 0.01 mm, which is only about eight points. The gap is as small as a hair.
With such precision, it is already a perfect circle at the macro level.
After seeing the surveying and mapping results, I realized why the heavy factory required improving accuracy as soon as it came in, and it is still the main task even now.
The more discussions and mapping, the greater the interest. Unfortunately, there is not enough time, so everyone can only go back to the institute to wait for news.
The dean returned to the hospital and endured it for two days. Then he went to the heavy industry every day and questioned the director of the heavy industry.
"We are also following the command. How dare I ask the army how to arrange it." The factory director said and walked to the window and pointed, "That's the exhibition hall. The original indoor sports ground in the factory has been cleared out. Anyway, you can take the goods when they arrive. You can get in with your academician certificate.”
After getting the confidence, Xiu went over every once in a while to take a look.
In fact, the director of the heavy factory is still lying. The indoor sports factory is just a temporary exhibition hall, and there is a new one under construction. The construction level is obviously different. The walls are thicker, and a steel mesh as thick as a little finger is built into the wall. .
The director of the heavy factory didn't know whether to laugh or cry: "That house will take more than a year to build. I'll tell you what to do now."
Perhaps feeling the plight of the factory directors, half a month after returning, an average of one military-escorted train delivered the goods in batches a day, and they were displayed in the original gymnasium area.
Although it is called a gymnasium, it is actually a workers' activity center. In addition to a badminton court-sized sports area running through the first and second floors, there are also various large and small rooms, which are divided into categories to store various things.
Xiu watched every day, waiting for the guard to let him go, and immediately called his family over.
Of course, I was in a hurry, and I didn't forget to keep it confidential. People who often leave the institute to go out to do things would not be called.
The gatekeepers here are the city defense troops from the west of the new city.
The Xincheng West Outpost was handed over to the city defense army when the city defense army switched from sharp blades to locals. They want to protect the open-air experimental site of the Heavy Industry and Research Institute in the northwest corner of the new city, so they must abide by the confidentiality principle.
Those who can enter the gate of heavy industry and stand guard are not ordinary people. They cannot go home from get off work like ordinary city defense troops. The stationing period is only two months, and they must be reviewed before rotation. The review work is handled by the Armed Forces Division of Xincheng Heavy Industry. If there is a suspected problem, the garrison stationed at the institute will be contacted directly to take over.
The job is hard, but it also has its benefits. The guard also gets a confidential allowance, which is paid jointly by the garrison and heavy industry. The total of several guards only costs a hundred or more yuan a month, but the process is quite troublesome.
Both groups of people had no time to flatter the guard, so they lined up to check their IDs and enter.
After entering, the two groups of people did not intentionally distance themselves. They just went wherever they were interested in, and even chatted with each other when they met.
"Rebirth of the Great Era of Fighting Waves"
The heavy industry and the research institute's manufacturing bureau have different positions. The former builds production machines, while the latter uses production machines. Although the manufacturing bureau also tried to build its own production equipment, the results were average.
The production equipment of the Manufacturing Bureau, the Magic Forging Machine has been popular for a while. However, during the train development process, Heavy Industry learned many types of hydraulic applications. Later, with the support of oil from Quagmire City, the pressure of the built forging machine climbed to thousands of tons!
Magic can produce many effects. Unfortunately, in the strong area of hydraulics, the energy consumption of magic is too large. Combined with the consumption of gem-grade artificial alumina in the production process, it is not feasible. Compared with electric ones, the cost performance is slightly lower.
The two groups of people from the Heavy Industry and the Research Institute came to see the exhibits for different purposes. The Research Institute basically just visited randomly, but the Heavy Industry has been stuck on a big task recently.
This group of people already had some clues when they went back to Jinhong, and they were looking forward to the opening of the exhibition hall every day. Now they are working separately inside to map various targets.
The most important of these is the turbine.
The important thing needs to be said repeatedly. The basic attribute of military equipment is reliability.
There is a "response time difference" in turbines driven by exhaust gas. After all, the engine needs to wait for the exhaust gas to be burned out before the rotational speed can be determined by the exhaust volume. This time difference may be the difference between life and death for military vehicles.
Therefore, even if there is a situation where a turbine must be used in military equipment, a mechanical turbine driven by a belt or chain will be used. The mechanical turbine will consume the power of the engine, and the power increase caused by the intake boost will be smaller, but it will respond immediately when the accelerator is pressed, and the air circulation from the exhaust will not be blocked due to the poor intake conditions. live.
There is no heavy equipment at all in the camp site, and military non-heavy equipment basically does not need to be pressurized. The only turbine components in the entire exhibition hall are from civilian vehicles, that is, vehicles used by researchers.
The main purpose of the team members' visit this time was to survey and map the turbine blades.
That's right, the thing that troubled the members of the steam turbine project team was the blades.
Due to the lack of scientific tools and the availability of a reliable set of integral formulas, obtaining a highly efficient blade form has become a task like finding a needle in a haystack.
If only it were easy to make turbine blades, it would be fine. At worst, we would have to try hundreds or thousands of times. The problem is that this piece of shit is so difficult to make that even the slightest change in the blades would require senior technical workers to hold meetings and discuss it for several days before the machine breaks down. It takes dozens of scrap pieces to produce something that meets the paper requirements.
This is just a reduced model. Because the original size parts have not yet been finalized, no processing equipment has been designed.
Now there is a direct reference. The leaf shape can save a lot of time. Even if the conversion rate cannot reach 50%, a 30% to 35% conversion rate is enough for the first generation. With sufficient power, it will be better in the future. Advance.
The steam turbine project team not only focuses on a few turbines, but also surveys and maps other things, such as the engine sealing area and various bearings.
The first steam turbine will be used at home and will not generate electricity. It will be used purely to replace the original drive mode of the machine tool workshop.
The machine tool workshop uses a reciprocating steam engine to drive the bearing group near the ceiling of the workshop, and then uses the mechanical structure to transmit it to each machine tool position.
The whole heavy industry spent a lot of thought on this structure. Now the main rotation system of the entire workshop has been replaced, and a lot of shock absorbers have been added. However, no matter how it is done, it will produce vibration on the terminal machine. Of course, it needs to be turned, and the vibration itself It is inevitable, but if the power access can be changed from reciprocating to shaft transmission, there will be greater room for improvement.
As for the motor drive... it's better not to expect it. The vibration amplitude of the motor from Fenggu Motor Factory is greater than that of the heavy industry's terminal machine for turning end points. It's better not to expect it to be as good as a pure manual!
Engineers will naturally not deny that electric motors are the future trend, because electric motors have a certain magnetic levitation space that can significantly reduce shaft vibration, but for now there is an insurmountable paradox.
That is, in the production of electric motors, equipment produced by heavy industry is required, and the highest processing accuracy of heavy industry will gradually decrease as the parts become larger, local assembly, and local assembly.
The motor produced by the machine over there goes through several assembly processes, and you want to increase the accuracy of the rework? Unless the stator and rotor do not collide at all while the motor is rotating.
It also involves permanent magnet material science and various processing links. The power-to-weight ratio of the motor is not high enough. If this value can be increased, a higher speed and larger torque can be driven at a suitable size, even if there is weak vibration. Some difficulties can be overcome manually.
How about asking the institute for help?
The team members discussed and stared at the mage members who were also in the exhibition hall.
